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net: dsa: mv88e6xxx: Add helper to determining if port has SERDES

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Refactor the existing code. This helper will be used for SERDES
statistics.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2018-03-01 02:02:30 +01:00 committed by David S. Miller
parent 436fe17d27
commit eb755c3f6b
1 changed files with 17 additions and 5 deletions
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22
drivers/net/dsa/mv88e6xxx/serdes.c
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@ -55,18 +55,30 @@ static int mv88e6352_serdes_power_set(struct mv88e6xxx_chip *chip, bool on)
return err;
}
int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)
static bool mv88e6352_port_has_serdes(struct mv88e6xxx_chip *chip, int port)
{
int err;
u8 cmode;
int err;
err = mv88e6xxx_port_get_cmode(chip, port, &cmode);
if (err)
return err;
if (err) {
dev_err(chip->dev, "failed to read cmode\n");
return 0;
}
if ((cmode == MV88E6XXX_PORT_STS_CMODE_100BASE_X) ||
(cmode == MV88E6XXX_PORT_STS_CMODE_1000BASE_X) ||
(cmode == MV88E6XXX_PORT_STS_CMODE_SGMII)) {
(cmode == MV88E6XXX_PORT_STS_CMODE_SGMII))
return 1;
return 0;
}
int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)
{
int err;
if (mv88e6352_port_has_serdes(chip, port)) {
err = mv88e6352_serdes_power_set(chip, on);
if (err < 0)
return err;